+\r
+/**\r
+ Returns a 64-bit signature built from 8 ASCII characters.\r
+ \r
+ @param A The first ASCII character.\r
+ @param B The second ASCII character.\r
+ @param C The third ASCII character.\r
+ @param D The fourth ASCII character.\r
+ @param E The fifth ASCII character.\r
+ @param F The sixth ASCII character.\r
+ @param G The seventh ASCII character.\r
+ @param H The eighth ASCII character.\r
+\r
+ @return A 64-bit value built from the two ASCII characters specified by A, B,\r
+ C, D, E, F, G and H.\r
+\r
+**/\r